// 创建一个分页结构体
func NewPagination(query *mgo.Query, url string, prePage int) *Pagination {
p := Pagination{}
p.query = query
p.count, _ = query.Count()
p.prePage = prePage
return &p
}
func (self *Service) NameSearch(ctx *gin.Context) {
c := self.db().C(models.Collection)
query := ctx.Param("query")
response := response{
NameSearch: []models.Name{},
}
response.Offset, _ = strconv.Atoi(ctx.Query("offset"))
response.Limit, _ = strconv.Atoi(ctx.Query("limit"))
if response.Limit == 0 {
response.Limit = 10
}
// For scans...
c.EnsureIndex(mgo.Index{
Key: []string{"totalCount"},
})
// For prefix scans...
c.EnsureIndex(mgo.Index{
Key: []string{"lowerName", "totalCount"},
})
var q *mgo.Query
if query == "" {
q = c.Find(nil)
} else {
q = c.Find(bson.M{
"lowerName": bson.RegEx{
Pattern: "^" + regexp.QuoteMeta(strings.ToLower(query)),
},
})
}
var err error
if response.Total, err = q.Count(); err != nil {
ctx.String(500, "%v", err)
return
}
var name models.Name
iter := q.Skip(response.Offset).Limit(response.Limit).Sort("-totalCount").Iter()
for iter.Next(&name) {
if name.RelatedNames == nil {
name.RelatedNames = []string{}
}
response.NameSearch = append(response.NameSearch, name)
}
if err := iter.Close(); err != nil {
ctx.String(500, "%v", err)
}
ctx.JSON(200, response)
}